Cut 12 Well Area, Kunbei Oilfield3 1 Study On The Distribution Law Of Reservoir Oil And Water

The thesis is directed by the reservoir description,reservoir geology,oil field geology,logging geology and other related disciplines.The core data,cuttings data and experimental data have been located,and caliper and mud invasion influence have been analyzed by using core data,well logging,logging data and experimental data.Based on index bed,log data has been normalized and standardized.By using the data of lithology,electrical,physical property and oil-bearing,four characteristics have been studied.The calculation models of porosity,permeability,shale content,carbonate content and formation water resistivity have been set up by using logging and experimental data,and then oil and water layer identification of standards have been established,the distributed regularity of oil and water have been studied in the vertical and plane.At last,the oil and water distribution control factors have been analyzed.The results show that conglomerate is the oily lithology,oil spots is the oiliness lower limit,pelitic siltstone is the lithology lower limit,the porosity cutoff is 8.50%,oil saturation lower limit is 45.00%,permeability lower limit is 0.10×10-3?m2,the resistivity lower limit is 6.20?2·m,the acoustic time lower limit is 230.00?s/m,density upper limit is 2.58g/cm3 in E31 reservoir.In the vertical,E31 reservoir is controlled by the structure,reservoir and poor reservoirs are mainly enriched in the higher part of structure,they are in the upper and middle target layer and the continuity is good,water layers are mainly in the lower part of structure and they are in the bottom and middle target layer.In the plane,water layers are mainly in the southern and eastern of study area,reservoir and poor reservoirs are mainly distributed in the southwestern,northeastern and central of study area.Dry layers are widely distributed in the I-1 thin layer.Reservoir and poor reservoirs are widely distributed in the I-2 thin layer.Oil layers are mainly developed in the I-3 and I-4 thin layer.Oil-water distribution of E31 reservoir is mainly controlled by the structure and reservoir physical property.